Hello gang - I just purchased my first class 3 - which is an ac556. I called ruger b4 I purchased it and they told me they still service them. HOWEVER - what they wont tell you (I found out the hard way), is that their customer service folks dont know that Ruger decided a long time ago to no longer make parts for the ac - thus, there are in essence no factory parts availabe. They will tell you there are, but if you make them tell you what parts are availalbe, you will find out that other than a few springs and a part or two that never breaks, there are no full auto parts. Thus, in reality there is NO factory service. Matter fact, two of folks I talked to came right out said "we no longer will service the ac556" then again others will tell you they have full service. But I made them let me talk to a supervisor - and she is the one who told me the 'real' bad news.